I second your other two points but I think this one is inaccurate:
> * (Nearly) everybody on our planet lives under a government whose fundamental structure and right to power comes from modern (meaning 17th century) political philosophy.
A large number of countries are ruled by dictators and their close supporters. Sometimes they position themselves within the boundaries of a more or less modern ideology but ultimately care only about being the one in command and use that ideology as lipstick. This is a straight continuation of prehistory, not something stemming from 17th century.
I meant more the structure of and justification for the state and sovereign, not liberal ideology. You’re absolutely right that a large number of people don’t live under the latter.
What is most annoying is: many of the dictators were installed by "democracies" so that these can continue their unsustainable lifestyles, at the expense of extreme suffering elsewhere.
...and I disagree with the parent's parent's point on progress in philosophy: all three examples are not progress of philosophy but at best influence or application of it, and in the last case did not involve trained/professional philosophers (e.g. Turing was a mathematician/chemist-turned-cryptoanalyst/computer scientist).
> * (Nearly) everybody on our planet lives under a government whose fundamental structure and right to power comes from modern (meaning 17th century) political philosophy.
A large number of countries are ruled by dictators and their close supporters. Sometimes they position themselves within the boundaries of a more or less modern ideology but ultimately care only about being the one in command and use that ideology as lipstick. This is a straight continuation of prehistory, not something stemming from 17th century.